The connection between Christian commitment and politics has always been pretty strange in this country. Ronald Reagan became beloved of the "religious right" while rarely darkening the door of a church and articulating only vague belief in a vague God, while the church-going, Bible-toting Bill Clinton was despised by them. If there has been a recent American president whose policies were derived relatively consistently from evangelical Christian theology, it would be Jimmy Carter, that Baptist Sunday-school teacher from Plains, Ga. But that's a story for another day.
Mind you, Bush still noisily attempts to tear down the wall between Church and State, ostracises secularists and throws bones to the Religious Right (such as his appointment of bona-fide Fundamentalist nutter John Ashcroft to the Department of Justice and railing against the threat to Truth, Justice and the American Way that gay marriage is), in between mouthing religious catchphrases at the right moments, though chances are, that has more to do with electoral opportunism than religious zeal.
AMEN!